BS 1726-3:2002
$102.76
Cylindrical helical springs made from round wire and bar. Guide to methods of specifying, tolerances and testing – Torsion springs
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 20 |
This Part of BS 1726 provides guidance on the specification, tolerancing and testing of parallel sided helical torsion springs manufactured from round wire and bar.
It applies to springs which may or may not be stress relieved after forming (hereinafter referred to as group A springs) and to springs the material of which has undergone a structural change by heat treatment after forming (hereinafter referred to as group B springs).
This standard gives two methods of specifying springs for general purposes and one method of testing springs.
NOTE It is not recommended that torsion springs be loaded in the opposite direction to that of coiling. If this is necessary then discussions should take place between purchaser and supplier.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British�Standard |
| 3 | Contents |
| 5 | 1 Scope 2 Normative references 3 Terms, definitions and symbols 3.1 Terms and definitions 3.2 Symbols |
| 6 | 4 Specifying springs for general purposes 4.1 General 4.2 Method one (customer design) |
| 7 | Figure 1 Data sheet 1 |
| 8 | Figure 2 Form of legs |
| 9 | Figure 3 Direction of coiling |
| 10 | Figure 4 Conventions for describing relative leg orientation |
| 13 | Figure 5 Data sheet 2 4.3 Method two (application for spring design) using Data Sheet�2 |
| 15 | 5 Tolerances 5.1 General Figure 6 Example torque testing layout |
| 16 | 5.2 Dimensional tolerances in the free state when torque testing is not specified Table 1 Calculated free relative leg orientation tolerance (± degrees) |
| 17 | 5.3 Dimensional tolerances in the free state when torque testing is to be performed 5.4 Property tolerances |
| 18 | 6 Methods of testing 6.1 General 6.2 Dimensional tests 6.3 Property tests |
| 19 | 6.4 Performance verification |
